Beach ball of death step aside, "Alert: No Internet Connection" has taken the crown!!

I dont know where to begin. All of my frustration wants to come up out at once without any particular order !!!!!

Since Snow Leopard, I have seen this "!" in the airport radar in the menu bar, so politely informing that i will not be able to connect to internet because....

I just received one of the latest model 13" mbps 3 days ago and till yet have not been able to connect to our homes wireless connection once! I dont know if this is a hardware problem or the fault of S.leopard, but after looking online (connected through the ethernet cable) i saw that many many people are having the same problem and it is attributed to S.leopard. I also had that intuition and have been inclined to think that that was the case.

I tried every solution i could find online, and everyone i could think of separately (at present i am installing OS 10.5 on an external partition to see how it connects to the wifi...). I also called tech support who were of the opinion that low and behold the Holly Apple could not be at fault, but that it was my router/ modem/ service provider, (even though the two other apple laptops in the house NOT running S.L connect fine, as well as the other PC in the house).

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